Rickertsen, Rick, author
American Management Association, 2006
eBooks
Feldman, Robert S., author
McGraw-Hill, 2013
Buku Teks
Stewart, Nathaniel
N.Y. Amacon , 1974
Buku Teks
Zichy, Shoya, author
[American Management Association, ], 2013
eBooks
Scott, Gini Graham, author
American Management Association, 2009
eBooks